80500480

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1031}}^1$

素因数の和:1113

約数の個数: 72

約数和(自身を含む): 196174944

約数和(自身を除く): 115674464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1031, 1220, 1280, 1952, 2062, 2440, 3904, 4124, 4880, 5155, 7808, 8248, 9760, 10310, 15616, 16496, 19520, 20620, 32992, 39040, 41240, 62891, 65984, 78080, 82480, 125782, 131968, 164960, 251564, 263936, 314455, 329920, 503128, 628910, 659840, 1006256, 1257820, 1319680, 2012512, 2515640, 4025024, 5031280, 8050048, 10062560, 16100096, 20125120, 40250240, 80500480]

約数ペア:

[(1, 80500480), (2, 40250240), (4, 20125120), (5, 16100096), (8, 10062560), (10, 8050048), (16, 5031280), (20, 4025024), (32, 2515640), (40, 2012512), (61, 1319680), (64, 1257820), (80, 1006256), (122, 659840), (128, 628910), (160, 503128), (244, 329920), (256, 314455), (305, 263936), (320, 251564), (488, 164960), (610, 131968), (640, 125782), (976, 82480), (1031, 78080), (1220, 65984), (1280, 62891), (1952, 41240), (2062, 39040), (2440, 32992), (3904, 20620), (4124, 19520), (4880, 16496), (5155, 15616), (7808, 10310), (8248, 9760)]